modified:   include/sxi_atomic.h
	new file:   sxisock/Makefile
	deleted:    sxisock/lib/Makefile
	renamed:    sxisock/lib/sxi_ring.c -> sxisock/sxi_ring.c
	renamed:    sxisock/lib/sxi_ring.h -> sxisock/sxi_ring.h
	renamed:    sxisock/lib/sxi_rxfifo.c -> sxisock/sxi_rxfifo.c

  modify dir.